945 resultados para hollow atom (HA)


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von S. Herxheimer

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We report on the realization of Atom Trap Trace Analysis for39Ar and its first application to dating of groundwater samples. The presented system achieves an atmospheric39Ar count rate as high as 3.58 ± 0.10 atoms/h allowing for the determination of the39Ar concentration in less than a day. We demonstrate that the measured count rates are proportional to the39Ar concentration by intercomparison with Low-Level Counting results and by measurements on prepared argon samples with defined concentration. For a geophysical application, we degas three different groundwater samples and gas chromatographically extract the argon. The39Ar ages inferred from the count rates extend over the accessible dating range and are in agreement with the Low-Level Counting results as well as with complementary isotope data.

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me-et Yehudah Yudl Rozenberg

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wohlmeymend entworffen von Philipp Ernst Christfelß. Nebst einer Vorrede ... Gustav Georg Zeltners

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In publicum emissa Per M. Hieronymum Avianum

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Sh. Ben-Tsiyon. Metsuyarim ʿal yede N. Guṭman

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aus denen Rabbinen deutlich vorgestellet und mit einer Vorrede Brandani Henr. Gebhardi. Mit einem curieusen Anhang vermehret, zum 3. mahl aufgel. und hrsg. von Christoph Wallich

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aus d. gediegensten Religions-Schriften ges. u. hrsg. von Herm. Jos. Schütz